{"instruction": "You are an expert in event argument extraction. Please extract event arguments and their roles from the input that conform to the schema definition, which already includes event trigger words. If an argument does not exist, return NAN or an empty dictionary. Please respond in the format of a JSON string.", "schema": [{"event_type": "discover vulnerability", "arguments": ["vulnerability", "discoverer", "capabilities", "vulnerable system version", "common vulnerabilities and exposures", "supported platform", "time"]}], "input": "Johnson said the attack was made possible after a city information technology team troubleshooting a separate communications issue with the server inadvertently changed a firewall and left a port , or a channel to the Internet , open for about 24 hours , and hackers who were likely running automated scans of networks looking for such vulnerabilities found it and gained access ."}
{"discover vulnerability": [{"vulnerability": "vulnerabilities", "discoverer": "hackers", "capabilities": "gained access", "vulnerable system version": "NAN", "common vulnerabilities and exposures": "NAN", "supported platform": "NAN", "time": "NAN"}]}